Polyethylene failure in two total knees. Wear of thin, metal-backed PCA tibial components.
Two women underwent a PCA total knee arthroplasty of the metal-backed type in which the tibial insert was only 4 mm thick in its thinnest portion. After 2 and 4 years, both women had pain on weight bearing due to polyethylene breakdown causing metal-to-metal contact. Such thin polyethylene components should not be used for knee replacements.
Lindstrand
A
A
Department of Orthopedics, University Hospital, Lund, Sweden.
Ryd
L
L
Stenström
A
A
D000368:Aged; D003343:Corrosion; D005260:Female; D006801:Humans; D007720:Knee Prosthesis; D008670:Metals; D010003:Osteoarthritis / Q000601:surgery*; D011095:Polyethylenes; D011474:Prosthesis Design; D011475:Prosthesis Failure
D008670:Metals; D011095:Polyethylenes